When there is an <env-entry> specified for a bean in ejb-jar.xml file. The bean has to be named with the same name as the name of its interface it is. Otherwise the @Resource annotation does not bind the value from env-entry.
It means that this code does not work

@Stateless
public class SharedBean implements Shared {
    @Resource(name = "strWho")
    String strWho;
    ...

For working it has to be specified like:

@Stateless(name = "Shared")
public class SharedBean implements Shared {
    @Resource(name = "strWho")
    String strWho;
    ...

Test on:
https://github.com/ochaloup/jboss-as/tree/JBQA-5483-test-migration-enventry-shared